Respuesta :
In a mechanical system, it is a law that energy should be conserved. In this case, what is the initial energy should be equal to the total energy after the motion happened. We do as follows:
PE(at rest) = KE(during motion) + PE(after motion)
51450 J = KE(during motion) + 32781 J
KE(during motion) = 18669 J
PE(at rest) = KE(during motion) + PE(after motion)
51450 J = KE(during motion) + 32781 J
KE(during motion) = 18669 J
Answer:
The Kinectic energy of the sled is 18669j
Step-by-step explanation:
From the above question.
Because the sled starts at rest ,
The total energy of the sled = 51,450j
The potential energy ( P.E) after traveling down the slope = 32,781 j
Total energy = Potential energy + Kinectic Energy
Kinectic Energy = Total energy - Potential Energy
Kinectic energy = 51,450 j - 32,781 j
= 18669j
Therefore, the Kinectic Energy of the sled = 18669j